TPS2045P Equivalent & Substitute Parts

Part Overview

The TPS2045P is a Power Management Integrated Circuit (PMIC) functioning as a power switch/driver with 1:1 N-Channel configuration and 250mA output capacity. Manufactured by Texas Instruments, this component operates across a 2.7V to 5.5V load voltage range with an 80mOhm typical on-resistance and includes integrated fault protection features including current limiting, over-temperature protection, and under-voltage lockout (UVLO).

The TPS2045P is classified as obsolete. Locating equivalent substitute components is necessary to support ongoing system maintenance, design updates, and production continuity where original inventory becomes unavailable.

Substiute Parts

TPS2045P

Texas InstrumentsIn Stock: 975TPS2045P Datasheet

Current PartRFQ

TPS2045D

Texas InstrumentsIn Stock: 718TPS2045D Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute components for the TPS2045P are identified based on strict electrical and mechanical parameter matching. The following criteria determine substitution eligibility:

Electrical Parameters (Must Match):

• Output configuration: High Side, N-Channel, 1:1 ratio
• Maximum output current: 250mA
• Load voltage range: 2.7V ~ 5.5V
• On-resistance (Rds On): 80mOhm typical
• Fault protection features: Current Limiting (Fixed), Over Temperature, UVLO
• Operating temperature range: -40°C ~ 85°C (TA)
• Interface type: On/Off, Inverting input

Mechanical Parameters (Allowed Variation):

• Packaging format: Different package types permitted (DIP, SOIC, etc.)
• Mounting technology: Through Hole or Surface Mount acceptable

The TPS2045D qualifies as a direct electrical equivalent with identical functional specifications. The primary difference is packaging format: the TPS2045D uses 8-SOIC surface mount packaging versus the 8-DIP through-hole packaging of the TPS2045P.

Parameter Comparison

Engineering Selection Recommendations

The TPS2045D is the manufacturer-recommended substitute for the TPS2045P. Both components share identical electrical specifications and functional characteristics, ensuring direct functional compatibility in circuit applications.

Product Status Consideration: The TPS2045P is obsolete, while the TPS2045D maintains active production status. This ensures long-term availability and supply chain continuity for the TPS2045D.

Compliance Alignment: Both components maintain ROHS3 compliance and identical regulatory certifications (REACH Unaffected, ECCN EAR99, HTSUS 8542.39.0001), supporting equivalent environmental and export compliance requirements.

Packaging Transition: Selection between these components depends on board-level implementation requirements. The TPS2045P uses through-hole 8-DIP packaging suitable for breadboard prototyping and legacy PCB designs. The TPS2045D uses surface-mount 8-SOIC packaging, appropriate for modern PCB assembly processes and space-constrained applications. Pin-to-pin functional equivalence is maintained across both package formats.

Frequently Asked Questions (FAQ)

Q: Can the TPS2045D directly replace the TPS2045P in existing designs?

A: Electrical and functional replacement is direct. Pin configuration and signal functionality are identical. PCB layout modification is required due to different package formats: 8-DIP (through-hole) versus 8-SOIC (surface-mount). Footprint redesign and assembly process changes are necessary.

Q: What are the key electrical parameters that define substitution eligibility?

A: Substitutes must maintain identical specifications for output configuration (High Side N-Channel 1:1), maximum output current (250mA), load voltage range (2.7V ~ 5.5V), on-resistance (80mOhm typical), fault protection features (Current Limiting, Over Temperature, UVLO), and operating temperature range (-40°C ~ 85°C).

Q: Why is the TPS2045P classified as obsolete?

A: The TPS2045P is no longer in active production. The TPS2045D represents the current active product offering from Texas Instruments with identical electrical functionality.

Q: Are there pin-count or pin-assignment differences between TPS2045P and TPS2045D?

A: Both components use 8-pin configurations with identical pin assignments and signal definitions. Package physical dimensions differ: 8-DIP measures 0.300" (7.62mm) width, while 8-SOIC measures 0.154" (3.90mm) width.

Q: Do both components meet the same regulatory and compliance standards?

A: Yes. Both TPS2045P and TPS2045D maintain ROHS3 compliance, REACH Unaffected status, and identical ECCN (EAR99) and HTSUS (8542.39.0001) classifications.